1. Concrete grinder machine G250P is upgrade version with new frame compared with G250 floor grinder. 

2. This frame is creative for grinding edge with foot pedal design, no need with wrench for screws for saving time and labour. 

3. The frame is more solid for stable grinding performance. Detachable dust shroud at both sides and machine head can be turned to left and right to make it grinding to wall corner and edge easily.

http://www.floorgrindermachine.com/